Genetic Algorithm Based Equalizer for Ultra-Wideband Wireless Communication Systems

Nazmat SURAJUDEEN-BAKINDE  Xu ZHU  Jingbo GAO  Asoke K. NANDI  Hai LIN  

Publication
IEICE TRANSACTIONS on Communications   Vol.E93-B   No.10   pp.2725-2734
Publication Date: 2010/10/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E93.B.2725
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Wireless Communication Technologies
Keyword: 
genetic algorithm,  ultra-wideband,  maximum likelihood detection,  minimum mean square error equalizer,  RAKE receivers,  

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Summary: 
In this paper, we propose a genetic algorithm (GA) based equalization approach for direct sequence ultra-wideband (DS-UWB) wireless communication systems, where the GA is combined with a RAKE receiver to combat the inter-symbol interference (ISI) due to the frequency selective nature of UWB channels for high data rate transmission. The proposed GA based equalizer outperforms significantly the RAKE and the RAKE-minimum mean square error (MMSE) receivers according to results obtained from intensive simulation work. The RAKE-GA receiver also provides bit-error-rate (BER) performance very close to that of the optimal RAKE-maximum likelihood detection (MLD) approach, while offering a much lower computational complexity.